Place your orders by phone or email by 4pm and we will have the order available for collection for 6.30am the following morning.

Just 2 minutes from the M25 Jct14, you can get your day started right by stopping @ SL3 0HJ to collect your materials needed for the day.

"One of the best tape measures I have ever used" - some guy

We offer a free, next day delivery service on all stock items, which all comes from our large warehouse near Heathrow.


Sika®-1 Waterproofer is an aqueous solution containing complex colloidal silicates. In the presence of water these swell and block the capillaries and pores in the applied sand/cement renders, screeds and mortar to provide an effective barrier against the transmission of liquid water.


Used: for structural screeds to resist water pressure below ground when used in conjunction with Sika®-1 pre-batched mortars; waterproof renders to resist moisture above ground; internal below ground basement waterproofing; general waterproofing admixture for mortar.  

  • Proven track record for over 100 years.
  • Suitable for brick, concrete and stone substrates.
  • Can be applied against live water infiltration, in conjunction with Sika® 2 and Sika® 4a.
  • Wall render and floor screed application.
  • Can be used internally and externally.
  • Excellent resistance to backwater pressure.
  • Approximate coverage 0.75 litres